Home / 812,100.50-1,120,682.46-449,524.28

Finding the Fourth Proportional to 812,100.50, 1,120,682.46 and 449,524.28

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Solution

The fourth proportional to 812,100.50, 1,120,682.46 and 449,524.28 is: 620,334.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    812,100.50 : 1,120,682.46 = 449,524.28 : x
  2. Step 2: Convert to fraction form
    812,100.50/1,120,682.46 = 449,524.28/x
  3. Step 3: Cross multiply
    812,100.50x = 1,120,682.46 × 449,524.28
  4. Step 4: Simplify right side
    812,100.50x = 503,773,975,940.13
  5. Step 5: Solve for x
    x = 503,773,975,940.13/812,100.50
  6. Step 6: Final answer
    x = 620,334.52

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.